Master-slave Blockchain Based Cross-domain Trust Access Mechanism for UPIOT

In order to solve the problem that the power terminal cross-domain authentication system is not compatible with the existing authentication system, this paper designs a cross-domain authentication model for power terminals based on master-slave Blockchain, including ubiquitous sensing module, cross-domain authentication module and grid application system module, original authentication system module. Secondly, based on the authentication model, the Blockchain-based registration process of the power terminal, the intra-domain authentication process based on the Blockchain, and the cross-domain authentication process based on the Blockchain are designed. Finally, from the two aspects of the registration process of the power terminal and the authentication process of the power terminal, it is verified that the authentication mechanism proposed in this paper can not only achieve cross-domain authentication of the power terminal, but also be compatible with the original identity authentication system.